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Reveal younger-looking skin with 1 tube of Crystal Retinal. Our iconic vitamin A night serum features retinAL; a next-generation retinoid that works 11x faster than classic retinOL* to visibly smooth, brighten and firm skin.
Unlike competing products, our patented stabilization system ensures maximum retinal effectiveness down to the last drop - without irritation.
*G. Siegenthaler et al., Retinol and retinal metabolism, Biochemical Journal, 1990, 268, pp. 371-378